"His (Narendra Modi's) barbs against the Third Front is actually because he thinks it will emerge as the First Front after the elections," Kumar, who is one of the prime movers for the Front, told reporters here.
Confident of the success of 11 non-Congress and non-BJP parties, Kumar said they would form government at the Centre on the basis of a common minimum programme.
On Modi's jibe that more than 12 prime ministerial hopefuls were getting their attires stitched for taking oath as the PM, he said, "They believe in designer clothes. Not me."
He contested Modi's allegation that milkmen were getting only Rs 18 per litre for their produce in Bihar while it was Rs 36 per litre in Gujarat, and said the COMFED, Bihar government's dairy cooperative, was purchasing milk at Rs 30 per litre.
Kumar also made a scathing attack at the BJP for its collusion with MNS in Maharashtra, which had targeted people from Bihar and Uttar Pradesh.